A Better Battery Box, Part 2 - Frustrating Success! - How to build a 48v Lifepo4 battery (Ep. 26) @TheDigitalMermaid
A Better Battery Box, Part 2 - Frustrating Success! - How to build a 48v Lifepo4 battery (Ep. 26)  @TheDigitalMermaid
Uploaded December 2021 | Updated September 2026, 3 weeks ago
Part 2 of the extremely trying battery box build. The new box works, but there were still challenges along the way. This video ends (rather abruptly) and the end of the box build.

In the next video, we're back to actual battery stuff, assembling the battery in the new box. Thank you for bearing with me through this... The last two videos are not to the standard I wish they were, but so it goes. :)

On dimensions; Let me finish the box design and I'll do a full shareable build plan.

0:00 - Review of second build
1:15 - Testing version 2, take 2
5:00 - Size comparison to v1
5:58 - Cutting slots for main cables in the divider
9:27 - Notes on practising on prototypes
10:01 - On switching to the JK BMS
10:48 - Deciding where components will go
12:00 - @OffGridGarageAustralia , the BMS manual!
13:30 - Mounting the SmartShunt
15:20 - Mounting the SmartShunt, try 2
16:43 - Flush-mounting the captive nuts
19:45 - An ode to my bench
20:45 - Deciding where to put the BMS
23:48 - Making mounts for the BMS on the divider
25:40 - The value of hand tools
30:45 - Making a handle for the divider
32:20 - The wrong tool for the job
34:00 - Frustrated use of hand tools
35:17 - Testing the handle, happiness!
36:00 - Cheap plywood woes, captive nut failure
37:05 - Scarfing in a repair piece of plywood
38:55 - Filming failure, scarf glue-up review
39:35 - Audio failure, captive nut success
A Better Battery Box, Part 2 - Frustrating Success! - How to build a 48v Lifepo4 battery (Ep. 26)Broke down on the Hudson RiverVictron Multiplus - Lazarette Install (Ep. 67)News from Off-Grid Garage; Dangerous JK BMS FlawCan I Charge LFP Off An Alternator, Cheaply?  - Renogy DC-DC 40A Charger (Ep. 62)Ep. 76 - On Our Way to Cape May #sailing #shortsA Better Battery Box, Part 3 - The New Box is Done! - How to build a 48v Lifepo4 battery (Ep. 27)Converting 48v Pack into 12v Packs - Part 4 (Ep. 52)Ep. 95 - 2 Throttles, 2 Motors, 1 Brain - DIY Helm ControlsConverting 48v Pack into 12v Packs - Part 2 (Ep. 50)Ep. 106 - Shaving My Box - Battery Prototype Pt. 2Preparing For The Trip Home - Part 2 - Diesel Tank Woes (Ep. 54)
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A Better Battery Box, Part 2 - Frustrating Success! - How to build a 48v Lifepo4 battery (Ep. 26)

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